Device for bending pipe and the like



March 3, 1 31- w. E. HOLSCLAW ET)AL 1,794,689

7 DEVICE FOR BENDING PIPE AND THE LIKE Filed Jan. 14, 1950 dyad??? Pat ente d Mar.,3,1931 1 V 1 ,794,689 1 it T WALTER, ns'rns enson-Aw Ann naaairnns'ronnonsotaw, oE' vANsvrLLnh I V I mp I V,

IDEVICE-FQEI nnnnmemrn AND THE LIKE Application filed Januar 14; 1930. s ri l 'No;'420,770.- I

i This invention relates to devicesfor bendthefollo wing detailed description in ingpipes and the like and has partlcular relation with the accompanying drawings,]in q tion todevices of this character;'wl1ich are which: i I 1 I adaptedfor'portableuse as well asfor mount- Figure 1 is a perspective yiew f device ing on benchesand other fixed supports for embodying the invention, showing the same '5) stationary use. I I applied to a pipe or tubein which a. bend has Vhepres'ent invention is an improvement been madeiby the operation of the device; I vqrjjhe device urprior PatentiNQQlfis'z I2 is a front elevational Viewshowin'g 210, dated 'October 9, 1928, the device iii-similar relation to a pipe orltube One object of-the invention i mrovide which :has beenbent thereby, .to that illus i a device-of the above-indicated character that trated in Fig'. but with certain partsfof the shallbe suitable for bending pipes, tubes and device adJusted in adiiferent manner, sothat the like during theactual installation of the a bend may be madein'a different direction; f

-same.- For example, in installing refrigerat-' this figure also showing in dotted linest'he 15 ing systems using brass or copper. tubing-it is position of thepipesectionlbefore it is bent; 00 f desirableto form the requiredbends in the and the corresponding positions of'thevarious piping as the installation progresses, rather parts-0f the bendingdevic'e; and F r than to form the pipe sections in a shop or at Fig.- 3 is a side elevational view ofthebenda work-bench and then "install suchsections in'g device shown in Figs. landQ. correspond I after the bends have been made. This is one ing to a View looking at the left end ofthe I 1 example of the type of use to which the pres 1 device, as shown in full lines in Fig. 2', but ent invention is especially adapted. V with the showing ofthe pipe omitted. V I AH hBI. Object Of'the invention -t P1 Referringto the drawings, the preferred videadeviceoftheabove-indicated character embodiment of the invention com'prises'a f that may be readily. adjusted for mak ng frame member 1.1 which is of substantially TJ bends in pipes and the like in any desireddi: diamond shape and constructed in a web. forrection, such as right-hand and left-hand 1nation. for the purposeof securing theinaxbends of' any' pa ticular installation, and imumstrength and rigidity with the mini+ a bends of any desired character where the mum weight. The frame 11 comprises-two v working space is: limited; and to construct Y journal portions 12 and 13 which are bored the device so that it may'bereadily removed to receive in freely sliding relation a pin 14. from the-work after use. The head of the pinl l is preferably knurled, Another object of the invention. is to proas shown, to facilitate it's insertionand revide adevice for bending pipesand the like moval in the desired one of the two journal embodying means for insuring the removal portions 12 and 13' of the frame 11. A Wheel t?) of kinks: or other irregularities .in thepipes 15 ofmutilated formation is boredthrough' or tubes which are, being bent. its hub to receivethe shank of the pin .14 in ,A furtherobject of the invention :is to pro-- freely fittingv relation, so that said wheel may I vide a device ofv the above-indicated charbe pivotally mounted onveither of two axes}; acter which shall be rugged in itsconstrucwhich are the axes ofthejournal portions 12 tion and reliable in operation without being and 13.0f the frame member. cumbersome to handle when being used as a The wheel Lois-formed with ajgroove 16 of portable device. substantially semicircular cross-section which .Other ob'ects and advantages of the inextends around a portion of tl'ie "peripheryljof vention will appear froma consideration of the wheel. -Another portionof tlie' periphery 99 of said wheel is provided with gear teeth 17 which extend from a point near one end of the groovelti around to a section 18 of the wheel which is mutilated by cutting out a portion approximately constituting a sector of the wheel. The groove 16 extends from the above-mentioned point adjacent the starting point of the gear teeth 17 around to the other edge of the mutilated portion 18. The wheel 15 is of spoke formation and a doublepronged hook 19 ispivotally mounted on a bolt or screw 190. carried by the" spoke determining one edge of the mutilated portion 1.8. TheprongsQOand21-of-the hook 19 proother of saidhoolts projecting out on the otherside of the wl1eel 15;-

A spindle22 is formed with gearteeth. constituting speech with its teeth adaptedto intermesh with the rtee th 17 on. the wheel 15. This spindle 22 has a reduced diameter shank 24% which is journaled in a suitable bore in the frame member lland which may be grooved to receive a retaining wire or ring 25 onthe inner surface of; said frame member when the parts] of the device are assembled. The forward portion of'the spindle 22 projects forwardly a substantial distance from the plane of the front surface of the wheel 15 and is bored transversely to receive handle member 26 whereby'thc spindle may be readily turned. in order to facilitate the use of the device where the working space islimited it is preferable to have the handle freely sl d able through "the transversehore 1n the spindle 22. For the purpose ofpre venting'the handle-26 from dropping out of v fourth corner of the frame member 11 carrise a stud 28 which is also located equidistant from the journal portions 12 and 18, and'npon this stud shoe 29 is pivotallymounted. The inner sunface of the shoe 29 is formed with a groove of substantially semicircular cross-section whichis complementary to the groove inthe wheel 15, and the length of the slioe 29 is such that one or the other of its ends lies in substantially tangential relation to the wheel 15, depending upon which of thetwo journal portions 12 and lilcarries the pivot pin 1 for said wheel.

In the position shown in Fig. 1 the pin 1e carrying the wheel 15'is inserted in the jourject in opposite directions from the outer end of said hook and are respectively adapted to grasp the pipe or tube tobebent w th the nal portion 12 at the upper corner of the frame member 11, anch accordingly, the upper end of the shoe 29 is adaptedto l1e 1n tangential relation to the wheel 15. 1n Fig. 2 the pin 141 is shown located'in the ournal portion 18 at the bottom of the frame member 11, so that the lower end of the shoe 29 is adapted to lie in tangential relation to the wneel 15. In order that the device may be adjustedfor either of these conditions the pin 14 is readily removable by the operator I who may grasp the same by its knurled for- -ward extremity and remove it from and insert it in either of the journal portions 12 and13, as desired. Theshoe 29', however, is always carried by the stud 28, and accidental displacement thereof from said stud is prevented by a retainingwire or ring 30 which may be conveniently carried in a peripheral groove at the forward:extremity 9f the said stud. e 1

The web portion of the frame member 11 is provided with holes 81 and 32 near the respectiveends of said frame member, and

these holes are adapted to receive bolts or screws for securing device to a bench or other support where it is tobe' use'd -as a stationary machine. As heretofore stated, however, an important "feature of t-he invcntion is the construction of the device whereby it is,adaptedforportable use -The operation of the device for both portable and stationary I use will no'w be described.

portion 33aof which indicates in dotted lines the vertical position of the pipe section be fore it has'beenbentto the position indicat- 1 'ed in full lines. Assuming that thisvertical-. ;ly depending pipe section 33 is held station-i ary-,-as by being fastened in'position in an' i "Fig.2 shows a pipe or tnbe 3, the'lower installatiom and that is desired to bend the lower eXtremity of'said pipe section to the position shownin full lines, the bending device'is appliedasshown in dotted lines. This application is made by sliding the device upwardly over the lower end 33a of the pipe; so

that the pipe extends through the substantiallycircular opening 7 between the wheel "15' and the'shoe 29'; which opening .isformod by the-complementary grooves 1n said members. The hook 19 1s so positioned in applying the device that the pipe end'33a-extends un der the prong 21, which is the rear one ofthe two prongswhen the pivot pin 14 for the wheel 15 is located in the ournal portion 13 ofthe frame 11- The relative positionsof the parts are such that thehook 19 then lies rel-.

atively close to the lower end'ofthe shoe 29, while the pimon 2 inter-meshes with the gear teeth 17' on the' periphery of the wheel 15' I near the inner end of the groove 16.

When the device is positioned in'this manner .thedesired bend in the lower .portion of the pipe section 33 is formed by rotating the pinion 23 in a'icount'ercloclnvise direction by I tion 16thereof rolls upwardlyalong the vertical pipeseotion. When the :wheel 15 isrotatedin this manner the .lower end of the pipe section is bent around until it occupies the position indicated in fulllines in Fig.

2, and during this operation theshoe 29 slides upwardly along the straight seot-ionfof the pipe, to theposition also indicatedin full lines. Since the shoe-29 is fixed againstany movement except pivotalmovement with. respect to the frame member; 11, this frame member also moves upwardly with respectltothepipe sectionv 33,, and at all times main tains its position witliits longer axisat suhscribed that the hook 19 is provided with the stantially right angles tothe straight section of the pipe 83. the pipeslides through the g shoe 29 it .ispressedfirmly against the outer end of the same,so that any kinks or other irregularities in the'pipe are eliminated by the corresponding pressure.automatically ap plied thereto by theinner end of the shoe, 1 that is, the end adjacent the wheel 15. This action ;may beaaocentuated,-if desired, by manually forcing the inner end of the shoe 1 29 (thelower end as viewed in Fig. 2) morefirmly against the pipe 33 by means of any. suitable implement onhanclle,butthepresg, sure which is automatically applied by rea;,; sonof the bendingfof the pipe is 'sufi'ioient to accomplish the desired result in all ordinary. cases. Itis primarily for this resaon that the shoe 29is pivotally mounted, for wehave foundthat .this construction, which; utilizes the forces produced in bending the pipe for automatically forcing the shoeytoward the, I periphery of the wheel 15, givesbetter re-.' sults than are obtainediwith afixed shoe.

l/Vhen the bend of the desired degree has been made in the pipe,.the device is removed therefrom by simply gavmgu reverse twls't of the pipe.

pinion is reversed. may be further facilitated, if desired, by re moving the pin 14, thus permittingbodilymovement of the wheel 15't'rom the shoe 2-9.

\Vhen it is desired to make a bend of the nature indicated in the pipe 84 in Fig. 1, the pivot pin 14 is removed from the j'ournalpor- 'tion 13 Ofthe framell and the wheel 15 (assunning the parts to be assembled in the 3 her shown in Fig. 2), and said wheel is turned over and its opposite i'ace placed against the front of thefra-memember 11; The pin 14: then inserted through the bore in the hub of the wheel-15 and into thejournal portion I 12 of the frame member. This places'the pose oi accommodating the operation-of the "parts in position to start the bendingofthe j pipe 3t with -the pinion 23 near the inner end of the seriesof gear teeth 17, in the same manner ;th at; these parts are positioned as shown in dotted lines inFig. 2. Therela tive positions of the parts are inverted,;how-

ever, so that a clockwiserotationis imparted to the pinion 23 to cause the opposite type of bend to be made in the pipe 34.

The constructionofthe device whereby the 1 wheel 15 simplyturned over and located on its opposite pivotal axis in the manner de scriliech so f g i eatimportance where the p pe v l to be bent is not readily accessible and the working space is limited. .It 1s forth'e pur device in either of the two conditions def' from the; front of-the device this construction a V l is most advantageous and eliminates internv ference betweenthe hook and the frame mem ber 11 during therotation of thewheel 15. 1

The devicemay also be used, if desired, 1 utilizing the shoe -29 to grasp -the free ex tren'iity of the pipe to be bent, and-rotating 'the handle 26 in the-same manner; as before. 1

,XVith' this mode oi operation the wheel 15. will remain" stationary while the frame member] 4 I 11 will rotate aboutthe pivot pin 14 v due to qthestepping'of the pinion'23'along-thegear 11y} teeth 1.7. The shoe-"29 will then'remainin Zfirm engagement-"with :the free extremity of i the p-ipe, and the latter will be dravviithrough the prong 20 or 21 of the hookl'9 andthe groove 16 0f the wheel 15. This alternative mode, of operation may be desirable undel certain conditions of operation, due to inaccessibility of the pipe, limitationsof-spacc, or otherttactors.

l/Vhenthe device is secured to a bench or other fixed support for stationary use, the method of operation is substantiallytthe same as that described above. "In this, case, of 3 course, the pipe sections will not beheld stationary, and the portionjto be bent willsimply] 11.; be inserted between the shoe '29 and the grooved, portion of the wheel 15 and under the rear prong ofthehook 19. As the handle 26 is then rotated, the. pipe section will be fed in and wrapped aroundthe wheel until the bend of the desired degree has been made. a

While only one specific modification ofthe J invention has-been illustrated and .clescribed herein, it"will be apparent to those ski-ll'edin' rangement of partsmay be made without-departing from the spirit and scope of the invention. F or example, different types of.

gearing or other operative connections may)? be-utilized between the handle and the wheel i5, and,-'-if desired, thepinion 23 111ay be pivotally-mounted on the wheel and arranged to engage teeth formed on the frame member.

'The grooved and geared portions. of the wheel maybe made separate and suitably secured together, rather thanbeing made integral. or replaced by rollers, and other forms of locking devices instead of the hook 19 may be-.u 1l1z'ed.' All of-these modifications and prising a frame member, a wheel having a peripheral groove therein for forming the desired bend in pipesor the like, means for securing a pipe orthe like to be bent in desired relation to said wheel, means for. pivotally mounting said wheel in either of two "positions on said frame member, means for effecting relative rotation between said frame memher and said wheelin either position of the latter, andia shoe pivotally mounted on said frame member to cooperate with saidwheel in either position of the latter in causing the desired bends to be made;

'2. A'deVice of the character described, comprising a frame member, a wheel having a peripheral 1 groove of substantially semicircular-cross-section therein for forming the desired bend inpipes' or the like, means for securinga pipe or the like to be bent in de sired relation to said wheel, means for pivotally mounting said wheel in eitherv of two positions on said frame member, means for effecting relative rotation between said frame member and said wheel in either position of the latter, and a shoe pivotally mounted on said frame member to cooperate with said wheel in either position of the latter in cansing the desired bendsto be made, said shoe having a groove of substantially semi-circular cross-sectiontherein complementary to the groovein said wheel and being mounted in such position that one or the other of its endslies in substantially tangential relation to said wheel during the operation of the device, depending upon which position is oc-' cupied by said wheel.

3, A device of the character described, comprising a framemember, a wheel having a peripheral-groove therein for forming the desired bend in pipes or the like, means for pivotally mounting said wheel in either of two positions on said framemember, means for effecting relative rotation between said frame member and said wheel in either position'of the latter, a shoe pivotally mounted on said frame member to cooperate with said wheel in'either'position of the latter in cans- The shoe 29 may be provided with ing'the desired be'Iids to be made, and; se-

curing means mounted on said wheelto'hold tion tosaid' wheell 4. device of 'the character described comprising 'aJframe-"memb'er, a wheel having 'a peripheral groove therein-for forming the desired bend in pipes or the like, means for pivotally mounting said wheel in either of two positions on said frame member, means for etlect ng relat ve rotation between 831d frame member and said wheel in either posi tion of the latter, a-shoe pivotally-mounted onsaid frame member to'cooperate with'said whee-tin either position of the latter iii-causing the desired bends to v be made, and a double-pronged hook mounted on said wheel and adapted to hold a pipe or the like to be bent in desired relation to said wheel with one or the otherof its two prongs, depending upon which position occupied by said wheel.

'5'. A device of character described, com prising a frame member, a wheel having a peripheral groove of substantially semicircular cross-section therein-for forming the desired bendin pipes or thelikeymeans for pivotally mounting said wheel in either of two positions on said-frame member, means for effecting relative rotation between said frame member and said wheel in either position of the latter, a shoe pivotallymounted onsaid frame member to cooperate with said wheel in either position of the latter in causing the desired bendstobemade, said shoe, having a groove of substantially semicircular cross-section thereincomplementary to the groove in said wheel and being mounted in such position that one or the other of its-ends lies in sub-' stantially tange'ntial relation to said wheel duringthe operation of the device, depending upon which position is occupied by said wheel,

and securing means mounted on said wheel to hold'a pipe or the like to be bent in desired relation to said wheel. 7

6. A device of the character described, comprising a" frame member, a wheel haviiig a peripheral groove of substantially semicircular cross-section therein for forming the desired bend in pipes or the like, means for pivotally mounting said wheel in either of two positions on said frame member, means for effecting relative rotation between said frame member and said wheel in either position of thelatter, a shoe pivota'lly mounted on said'frame member to cooperate with said wheel ineit-her position of the latter in cansing the desired bends to be made, said shoe :lMHHlg a groove of'substant-ially semicircula cross-section therein complementary to the groove in said wheel and being mounted in such position that one or the other of'its lit":

ends lies in I substantially tangential relation to said wheel during the operation of the device, depending upon which position is oc- .cu )ied b said wheel and a doubleron ed hook mountedlon said wheeland adapted to-j I I I comprismg frame member, a. mutilated i hold a pipe or the likevto be bent in desired relation to said Wheel with one .orthe other of its two prongs, depending upon which position iSOCCHPlQd by said Wheel.

.7..A device of the character]described ,comprisinga frame member, a mutilated' Wheel haying a peripheral gropve thereinl for forming the desired: bend in'pipes orthe like, fmeansy for pivotally mounting said Wheel in either otftwo v positions on said frame member, means for efi'ecting relative ,l'OlZZLtIOD between sa d frame member and p said-r wheeljin either; position of the latter, a

shoepivotally,mounted on said frame -mem-, her to cooperate with saidwheel in either position of the latter in causing the desired bends "to be" made, i and securing. means pivotally mounted on the mutilated portion of said wheel tohold a pipe or the like to be Y bent in desired relation to said wheel.

8, A device'ofthe character described, comprising a frame member, a mutilated wheelhaving a peripheral groove therein for forming the desired bend in pipes or the like, means forgpivotally mounting said 'wheeljinieither oftwo positions 'on said 5 ,frame ember, means for' efi'e cting' relative rotation' ibetween saidfframe member and, saidwheel. in eitherposition of theglatter, a

, shoe, pivota-llymounted on said framememwheel in either} offl two positionslon said 1 frame :member,v means,for effecting relative rotation between said frame member and v said wheel ingeither position of the; latter, a shoe pivotally mounted onsaid frame member to cooperate with said wheel in either uber to ,cooperate with said wheel in: either position of the latter in causing the desired,

bends .to bejmade,t.and Y a. double-'pronged hook; pivotally mounted: on the mutilatedportion of said wheel-and adapted to hold a pipe orthe like to be bent in desired relationutosaid wheel with one or the other of its two prongs, depending upon whichpo- {sition is occupied-by said Wheel. i 9. A device of the character described, comprising ;a frame, member, a mutilatedwheel havinga peripheralgroove of substantially semicircular cross-section therein c for formingthe, desired bend; in pipes or the 1- like, meansf for" pivotally mounting said position; of the latterin causing the desired bends to be made, said shoe having a groove of substantlally semicircular cross-section v therein complementary to the groove in said r wheel and being mounted in such position I that on'e or the other of its ends lies in-.subi stantially tangential relation to said wheel during the operation of the device, dependupon which position is occupied 'by said- 2 "wheel, and securing means pivotallymount "V ed-"on the-mutilatedportion of said? wheel to 1 7. ,hold a pipe or the like to bebentain-de'sired relation to said wheel.

lOiA device of the icharacter described,

either positionof the, latter in causing the desired'bends tobe made,' said shoe having a groove of substantially semicircular crosssection therein complementary to the groove in said wheel and, bemg mounted 1n sucl'i position that one or the other of its ends lies in. substantially tangential relation to i .saidwheel during the operation of the device, depending upon which position is oc- ,cupied by said wheel, and a doublerpronged hook .pivotally mounted; on the mutilated portion, of said wheel and adapted to hold a pipe orvthe liketo be bentin desired relation to said wheelwithone or the'other of its two prongs, depending upon which p0 'sition is occupied byfsaid Wheel.

11(A deviceof the character. described,

comprising a frame member, a wheel having a peripheral groove therein, means for securing at pipe or'thelike to:be bent in desired relation tosaid Wheel, means cooperable with 1,said Wheelfor forming the desired 'bendin v,

pipes or the like, means forpivotallymounting said wheel in either of two positions on said frame member, andmeansmounted on i said framemember equidistant from the two .pivotalaxespf said wheel for effecting relat ve rotation betweensaidigframe member and saidwheelineither position of the latter. 7 12. device :of thefcharacter described, comprising a frame'member, a wheel having a peripheral groove ,therein for forming the a ,desired bend in pipes or the hke, means for securing a pipe or thelike to be bent in desiredrelation to said wheel, means for pivotally mounting said wheel in eitherzof two positions on said: frame, member, means,- I

mounted on said frame member equidistant from the two p votal axes-of said wheel for effecting relative rotation between said frame member and said Wheel in elthcr position of said frame member equidistan'tzirointhe two causing the desired bends'to be made;

the latter,a nda shoe pivotally mounted on;

"pivotal axes of, said wheel to cooperate with V ---said wheel in either position ofjl'the latterl -n v pipe or 'tl1e, l ike5 t o b'e bent in desired relation -tdsaid Wheel, Imeans cooperable vwitl1 "sa id' wheel for forming the desiredbend inpipes or the like, means for pivotally mounting frame member, and an operating member having teeth adapted to mesh with the geartoothed portion oi? said wheel and mounted on said frame member equidistant from the two'pivotal a-xesof'said wheel for effecting relative rotation bet-ween said frame member and said wheel in eitherposition of the latter.

comprising a 'frame member, a wheel having a peripheral groove therein for forming the desired bend in pipes or the like and having a gear-toothed portion, means for securing v a pipe or the like to be bent in desired relation to said wheel, means for pivotally mountmg said wheel in either of two positions on said frame member, an operating member having teethadap'ted to mesh with the gear toothed portion of said wheel and mounted on said frame n'i'ember equidistantfrom the two pivotal axes or said wheel for efi'ecting relative rotation between said frame member and said wheel in either position of the latter, and a shoe pivotally mounted on said frame member equidistant from tli'e two pivotal axes of sa d wheel to cooperate with said \vheel n either position of the latterfin' causing the desired, bends to be made.

having'gear teeth around another portion of its periphery; means for securing a pipe or the like to be bent in des11ed1relat1onto said wheel, means cooperable with said Wheel for forming the desired bend in pipes or t-he like, means for pivotally mountlng said wheel in either of two positions on said frame member,

a pinion pivotally mounted on said frame member equidistant fromthe two pivotal axes of said wheel whereby an intermeshing engagement bet-ween said pinion and the gear teeth ,on said Wheel is obtained in either position of the latter, and means for turning said pinion to effect relative'rot ation between said frame member and saidwlieel. A i i 16'. A device of the character described, comprising a frame. member, a wheel having a groove in a portion of its periphery for forming the desired bend in pipes or the like and having gear teeth around another portion of its periphery, means for, securing a pipe or the like to be bent in desired relation'to said wheel, means for pivotally mounting said wheel in either of two positions on said frame member, a pinion pivotally mounted on. said frame member equidistant from the two pivotal axes of said wheel wherebya'n interme'sh- 'ing engagement between said pinion and the geariteeth on said wheel is obtained in either position of the latter, means for turn ng said pinion to effect relative rotation between said iramemembe'r and said wheel, and a shoe pivotally mounted on said-frame member 15. A device of the character described,

equidistant from the two pivotal axes of said wheel to cooperate with said wheelin either position of the latter in causing the desired bends to be made. j w p is p i "1.7. A device of the character described, comprising a frame member, a wheel having a peripheral groove therein for forming the ,desired bend' in pipes or the like,means for I securing a pipe or the like to be bent in desired 14; A device of the character described,

relation to said wheel, means for 'pivotally mounting said wheellineither, of two positions on'said frame member, means for eflecting relative rotation between said ,iir'ame member and said wheel, and a shoe monnted on said'frame member to' cooperate with said wheel in either position of the latter in causing the desired bends to be made.

18. A deviceotthe character described, comprising a frame me mber,, a wheel having 'aYp ei-ipheral groove of substantiallysemicircul'ar cross-seamsthe-entire: forming the therein eomple'menta rj to the groove insaid 'wheehtocooperate wanted wheel iii either position ofthe latter infcaus'ing the desired bends to b e 'mad'e. i

19; A" device "of the character described, comprising a frame member, awheel having a groovein a portion of its. periphervfor forming the desired bend in pipes r the like andjhavinggear teeth around another portion of its .p'eriphery,'-lmeansf for securing a pipe orthe like to be bnt in desired relation to said whar'meahsrer pivotall'y'mounting saidwlieel in either loftwo po's'itions on said frame member, a pinion pivotally ,mounted on said frame. member in intermesliing engagement with the'gear moron said 'wheel, aieansroifaa-hih said pinion to efiect relativejr'ot'ationbetweensaid framemember and said wheel, and ashoemounted on saidframe member to'cobi'ierate with said wheelin either position or the latter in causing the desired bends'to'be made 7 f 20. A device of 'thejohfiracter"described, comp-risinga frame-member, a wheelhav'ing a g oove" of subs/tantiallj semicircularcrosss'ction ina portion of its' 'periphery ferromaing the desiredjbendliifpipesjor the lik and having gearteeth around another" portionfof its periphery, "means" for earrings 'j the like to be bent in de's red re'lat-iontosaid wheel, means ztorf pivotallyj mounting said wheeli either'of two pesitioh 6n; sa id fr'a inemberiapinion pi votally mounted on faid frame-memberin intejmes g feng agemlent *with "the: gearlteethf on sa wheek,

I e'ans for turning said pinion to effect relative rotation betweensaid frame member and said Wheel, and :i slice mounted on. said frame member and having a groove of substantially semicircular cross-section therein eomplementary to the groovein said wheel,- tor cooperate with -*said Wheel in either position of the latter in causing the desired bends tobemade.

In Witness WhereOf; -we, have hereunto sub-- scribe-dour names. I

WALTER ESTES HOLSCLAW.

HARRY. ELSTON HOL SC LAW. 

